Toilet bowl insert



FIG. 1 is a front view of a toilet bowl insert showing my new design;

FIG. 2 is a rear view of the toilet bowl insert;

FIG. 3 is a right side view of the toilet bowl insert;

FIG. 4 is a left side view of the toilet bowl insert;

FIG. 5 is a top view of the toilet bowl insert;

FIG. 6 is a bottom view of the toilet bowl insert; and,

FIG. 7 is a top front side perspective view of the toilet bowl insert in use.

The broken lines in FIG. 7 illustrate environmental structure that forms no part of the claim. 

CLAIM The ornamental design for a toilet bowl insert, as shown and described. 